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Marquise|Natural|GIA

0.42ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 6551423546

Certificate GIA 6551423546

Diamond specifications and retailer prices

From $566 AUD
MYR 1,616 MYR
As of November 2, 2026
Save $227 AUD (29%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $794 AUD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.42ct natural marquise diamond

This 0.42ct natural marquise sits in the sub-half-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551423546. Listed at 4 retailers as of November 2, 2026, with prices from $566 to $794, a $227 spread on the same certified stone. 77 Diamonds lists it at $794. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.42
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551423546
Dimensions7.63 × 3.96 × 2.45 mm
L/W Ratio1.93
Culet sizeNone
Key to symbols
Feather, Twinning Wisp
Top View
7.63 mm3.96 mm0.42 ctH / SI1
OriginNatural
CutGood
PolishGood
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551423546
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 61.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $794 AUD|Low: $544 AUD|High: $800 AUD|Avg: $664 AUD|+1.0%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4$566 AUD
Retailer 3$634 AUD
Retailer 2$679 AUD
77 Diamonds$794 AUD

39 data points across 4 retailers

4 retailers$566 AUD to $794 AUD

B+
Cheapest Retailer
-
$566 AUD
MYR 1,616 MYR
B+
Retailer 2
-
$634 AUD
$444 USD
View
Final sale: no returns
B
Retailer 3
-
$679 AUD
SGD 643 SGD
View
Most Expensive
B
77 Diamonds
MQCPMXRJ6WYA · Nov 2
$794 AUD
£438 GBP
View
3 more retailers have this diamond
Prices start from $566 AUDSave up to $227 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.42ct Marquise
$566 AUD